package com.example.administrator.basedemos.utils;

import android.util.Log;

import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.UUID;

public class FileImageUpload {
    private static final int    TIME_OUT = 10 * 10000000; //超时时间
    private static final String CHARSET  = "utf-8"; //设置编码
    public static final  String SUCCESS  = "1";
    public static final  String FAILURE  = "0";
    private static final String TAG      = "FileImageUpload";

    /**
     * android上传文件到服务器
     *
     * @param file       需要上传的文件
     * @param RequestURL 请求的rul
     * @param token
     * @return 返回响应的内容
     */
    public static String uploadFile(File file, String RequestURL, String token) {
        String BOUNDARY = UUID.randomUUID().toString(); //边界标识 随机生成
        String PREFIX = "--", LINE_END = "\r\n";
        String CONTENT_TYPE = "multipart/form-data"; //内容类型   
        try {
            URL url = new URL(RequestURL);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setReadTimeout(TIME_OUT);
            conn.setConnectTimeout(TIME_OUT);
            conn.setDoInput(true); //允许输入流  
            conn.setDoOutput(true); //允许输出流  
            conn.setUseCaches(false); //不允许使用缓存   
            conn.setRequestMethod("POST"); //请求方式   
            conn.setRequestProperty("Content-Type", "application/json");
            conn.setRequestProperty("auth_token", token);
            conn.setRequestProperty("Charset", CHARSET);
            //设置编码   
            conn.setRequestProperty("connection", "keep-alive");
            conn.setRequestProperty("Content-Type", CONTENT_TYPE + ";boundary=" + BOUNDARY);
            if (file != null) {
                /** 当文件不为空，把文件包装并且上传 */
                OutputStream outputSteam = conn.getOutputStream();
                DataOutputStream dos = new DataOutputStream(outputSteam);
                StringBuffer sb = new StringBuffer();
                sb.append(PREFIX);
                sb.append(BOUNDARY);
                sb.append(LINE_END);
                /**
                 * 这里重点注意：
                 * name里面的值为服务器端需要key 只有这个key 才可以得到对应的文件
                 * filename是文件的名字，包含后缀名的 比如:abc.png
                 */
                sb.append("Content-Disposition: form-data; name=\"img\"; filename=\"" + file.getName() + "\"" + LINE_END);
                sb.append("Content-Type: application/octet-stream; charset=" + CHARSET + LINE_END);
                sb.append(LINE_END);
                dos.write(sb.toString().getBytes());
                InputStream is = new FileInputStream(file);
                byte[] bytes = new byte[1024];
                int len = 0;

                while ((len = is.read(bytes)) != -1) {
                    dos.write(bytes, 0, len);
                }
                is.close();
                dos.write(LINE_END.getBytes());
                byte[] end_data = (PREFIX + BOUNDARY + PREFIX + LINE_END).getBytes();
                dos.write(end_data);
                dos.flush();

                /**
                 * 获取响应码 200=成功
                 * 当响应成功，获取响应的流
                 */
                int res = conn.getResponseCode();
                System.out.println("response code:" + res);
                if (res == 200) {
                    LogUtil.util(TAG, "返回if res数据是------------------------------:" + res);
                    int i = res;
                    InputStream input = conn.getInputStream();
                    StringBuffer sb1 = new StringBuffer();
                    int ss = 0;
                    while ((ss = input.read()) != -1) {
                        sb1.append((char) ss);
                    }
                    String result = sb1.toString();
                    Log.e(TAG, "上传成功");
                    Log.e(TAG, "result : " + result);
                    return result;
                } else {
                    Log.e(TAG, "上传失败");
                    Log.e(TAG, "上传失败"+res);
                }
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return "FAIL";
    }
}
